accrete

To grow together, combine; to fuse.

Astronomers believe the Earth began to accrete more than 4.6 billion years ago.

According to the reigning hypothesis, about 4.5 billion years ago, shortly after Earth had accreted down into a sphere from its little slub of circumsolar material, another newborn planet [Theia], still shaky on its feet, slammed obliquely into Earth with terrifying force.

To adhere; to grow or to be added to gradually.

To make adhere; to add; to make larger or more, as by growing.

the reader has not only mastered this distinction , but that he has so thoroughly accreted it and assimilated it to his habits of mind

Characterized by accretion; made up.

accrete matter

Grown together.

Fruit coriaceous, crowned with accrete calyx